I did the mil.spec seals in my throttle body and put it back in the car. It has been in since Thursday. It ran and idled fine. I changed spark plugs last night and went for a drive the car was perfect. I had previously had BPR8ES in the car and I put BR8ES in. Today the car idled and warmed up but after I started to drive it, it wanted to die everytime. It wont even stumble just drops and dies. I really dont think that changing the type of spark plug could make a difference. I previously ran the BR8's a couple of times with no issues. I was thinking that maybe the IAC valve went bad.. Does anybody have any input as to what this could be?

thanks

PJ